O’Fallon, Missouri
Sell your home and stay in O’Fallon.
O’Fallon is one of Missouri’s fastest-growing cities — a deep mix of newer construction and established subdivisions along the Highway K and I-64 corridors, with strong Fort Zumwalt and Wentzville schools.
Mainstay buys O’Fallon homes for 80–95% of their value, pays off your mortgage, and leases the home right back to you — so you unlock your equity without leaving your home, your schools, or your neighbors. We serve all of St. Charles County.
How it works in O’Fallon
We bring you our best offer
Built from real nearby comps — no haggling, no pressure.
We buy and clear your mortgage
Sale proceeds pay off your mortgage and any liens in full.
Six months of rent, prepaid
From your own proceeds — so no rent checks for six months.
You get a check and stay put
Keep your home, your schools, your neighbors — as a renter.
Your number, backed by O’Fallon comps
Your estimate isn’t a number we made up. Thanks to St. Charles County’s public sale records, your O’Fallon number reflects real, recent comparable sales near you — not a guess. It’s a sale plus a lease — not a loan, mortgage, or refinance — and the price is set transparently, with no negotiation games.
See what staying put could look like in O’Fallon
A transparent, no-obligation estimate in minutes — cash at closing, your monthly rent, and your mortgage paid off.
We also serve
O’Fallon is one of our St. Charles County submarkets — see the full St. Louis & St. Charles service area.